Initial commit: added frontend and backend

backend/controllers/userController.js

@@ -0,0 +1,78 @@
+const User = require('../models/User');
+
+exports.createUser = async (req, res) => {
+  try {
+    const { name, phone } = req.body;
+
+    if (!name || !phone) {
+      return res.status(400).json({ success: false, message: 'Name and phone are required' });
+    }
+
+    // Generate a random 4 digit OTP
+    const generatedOtp = Math.floor(1000 + Math.random() * 9000).toString();
+    const otpExpiry = new Date(Date.now() + 10 * 60 * 1000); // 10 minutes from now
+
+    let user = await User.findOne({ phone });
+    let isExisting = false;
+
+    if (user) {
+      isExisting = true;
+      user.otp = generatedOtp;
+      user.otpExpiry = otpExpiry;
+      user.name = name; // Update name just in case
+      await user.save();
+    } else {
+      user = await User.create({
+        name,
+        phone,
+        otp: generatedOtp,
+        otpExpiry
+      });
+    }
+
+    res.json({
+      success: true,
+      user: {
+        otp: user.otp,
+        isExisting
+      }
+    });
+  } catch (error) {
+    console.error('Error creating user:', error);
+    res.status(500).json({ success: false, message: 'Server error' });
+  }
+};
+
+exports.verifyOtp = async (req, res) => {
+  try {
+    const { phone, otp } = req.body;
+
+    if (!phone || !otp) {
+      return res.status(400).json({ success: false, message: 'Phone and OTP required' });
+    }
+
+    const user = await User.findOne({ phone });
+
+    if (!user) {
+      return res.status(404).json({ success: false, message: 'User not found' });
+    }
+
+    if (user.otp !== otp) {
+      return res.status(400).json({ success: false, message: 'Invalid OTP' });
+    }
+
+    if (user.otpExpiry < new Date()) {
+      return res.status(400).json({ success: false, message: 'OTP expired' });
+    }
+
+    // Clear OTP after successful verification
+    user.otp = null;
+    user.otpExpiry = null;
+    await user.save();
+
+    res.json({ success: true, message: 'OTP verified successfully' });
+  } catch (error) {
+    console.error('Error verifying OTP:', error);
+    res.status(500).json({ success: false, message: 'Server error' });
+  }
+};